Commit 9ea28a36 authored by Robert Nelson's avatar Robert Nelson Committed by Tony Lindgren
Browse files

ARM: dts: Add am335x-bonegreen-wireless 

SeeedStudio BeagleBone Green Wireless (BBGW) is an expansion of the
SeeedStudio Green (BBG) with the Ethernet replaced by a TI wl1835
wireless module.

This board can be indentified by the GW1x value after A335BNLT (BBB)
in the at24 eeprom:
GW1x [aa 55 33 ee 41 33 33 35  42 4e 4c 54 47 57 31 41  |.U3.A335BNLTGW1A|]

http://beagleboard.org/green-wireless
http://wiki.seeed.cc/BeagleBone_Green_Wireless/

firmware: https://github.com/beagleboard/beaglebone-black-wireless/tree/master/firmware


wl18xx mac address: Stored in at24 eeprom at address 5-16:
hexdump -e '8/1 "%c"' /sys/bus/i2c/devices/0-0050/eeprom | cut -b 5-16

Signed-off-by: default avatarRobert Nelson <robertcnelson@gmail.com>
CC: Tony Lindgren <tony@atomide.com>
CC: Jason Kridner <jkridner@beagleboard.org>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent a0c2b618

arch/arm/boot/dts/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -565,6 +565,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \ 
	am335x-boneblack.dtb \

	am335x-boneblack-wireless.dtb \

	am335x-bonegreen.dtb \

	am335x-bonegreen-wireless.dtb \

	am335x-chiliboard.dtb \

	am335x-cm-t335.dtb \

	am335x-evm.dtb \

arch/arm/boot/dts/am335x-bonegreen-wireless.dts

0 → 100644
+126 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

/dts-v1/;



#include "am33xx.dtsi"

#include "am335x-bone-common.dtsi"

#include "am335x-bonegreen-common.dtsi"

#include <dt-bindings/interrupt-controller/irq.h>



/ {

	model = "TI AM335x BeagleBone Green Wireless";

	compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";



	wlan_en_reg: fixedregulator@2 {

		compatible = "regulator-fixed";

		regulator-name = "wlan-en-regulator";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <1800000>;

		startup-delay-us= <70000>;



		/* WL_EN */

		gpio = <&gpio0 26 0>;

		enable-active-high;

	};

};



&am33xx_pinmux {

	bt_pins: pinmux_bt_pins {

		pinctrl-single,pins = <

			AM33XX_IOPAD(0x878, PIN_OUTPUT_PULLUP | MUX_MODE7)	/* gpmc_ad12.gpio1_28 BT_EN */

		>;

	};



	mmc3_pins: pinmux_mmc3_pins {

		pinctrl-single,pins = <

			AM33XX_IOPAD(0x830, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ad12.mmc2_dat0 */

			AM33XX_IOPAD(0x834, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ad13.mmc2_dat1 */

			AM33XX_IOPAD(0x838, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ad14.mmc2_dat2 */

			AM33XX_IOPAD(0x83c, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ad15.mmc2_dat3 */

			AM33XX_IOPAD(0x888, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_csn3.mmc2_cmd */

			AM33XX_IOPAD(0x88c, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_clk.mmc2_clk */

		>;

	};



	uart3_pins: pinmux_uart3_pins {

		pinctrl-single,pins = <

			AM33XX_IOPAD(0x934, PIN_INPUT_PULLUP | MUX_MODE1)	/* gmii1_rxd3.uart3_rxd */

			AM33XX_IOPAD(0x938, PIN_OUTPUT_PULLDOWN | MUX_MODE1)	/* gmii1_rxd2.uart3_txd */

			AM33XX_IOPAD(0x948, PIN_INPUT | MUX_MODE3)		/* mdio_data.uart3_ctsn */

			AM33XX_IOPAD(0x94c, PIN_OUTPUT_PULLDOWN | MUX_MODE3)	/* mdio_clk.uart3_rtsn */

		>;

	};



	wl18xx_pins: pinmux_wl18xx_pins {

		pinctrl-single,pins = <

			AM33XX_IOPAD(0x828, PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* gpmc_ad10.gpio0_26 WL_EN */

			AM33XX_IOPAD(0x82C, PIN_INPUT_PULLDOWN | MUX_MODE7)	/* gpmc_ad11.gpio0_27 WL_IRQ */

			AM33XX_IOPAD(0x87C, PIN_OUTPUT_PULLUP | MUX_MODE7)	/* gpmc_csn0.gpio1_29 LS_BUF_EN */

		>;

	};

};



&mac {

	status = "disabled";

};



&mmc3 {

	dmas = <&edma_xbar 12 0 1

		&edma_xbar 13 0 2>;

	dma-names = "tx", "rx";

	status = "okay";

	vmmc-supply = <&wlan_en_reg>;

	bus-width = <4>;

	non-removable;

	cap-power-off-card;

	ti,needs-special-hs-handling;

	keep-power-in-suspend;

	pinctrl-names = "default";

	pinctrl-0 = <&mmc3_pins &wl18xx_pins>;



	#address-cells = <1>;

	#size-cells = <0>;

	wlcore: wlcore@2 {

		compatible = "ti,wl1835";

		reg = <2>;

		interrupt-parent = <&gpio0>;

		interrupts = <27 IRQ_TYPE_EDGE_RISING>;

	};

};



&uart3 {

	pinctrl-names = "default";

	pinctrl-0 = <&uart3_pins &bt_pins>;

	status = "okay";

};



&gpio1 {

	ls_buf_en {

		gpio-hog;

		gpios = <29 GPIO_ACTIVE_HIGH>;

		output-high;

		line-name = "LS_BUF_EN";

	};

};



/* BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated.*/

/* in case it isn't, wilink8 ends up in one of the test modes that     */

/* intruces various issues (elp wkaeup timeouts etc.)                  */

/* On the BBGW this pin is routed through the level shifter (U21) that */

/* introduces a pullup on the line and wilink8 ends up in a bad state. */

/* use a gpio hog to force this pin low. An alternative may be adding  */

/* an external pulldown on U21 pin 4.                                  */



&gpio3 {

	bt_aud_in {

		gpio-hog;

		gpios = <16 GPIO_ACTIVE_HIGH>;

		output-low;

		line-name = "MCASP0_AHCLKR";

	};

};

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